Should you build your own OnceHub?
Publish booking pages with routing rules, forms, and reminders
The core loop is buildable, but a dependable replacement becomes a real weekend or multi-day project. For OnceHub, publish booking pages with routing rules, forms, and reminders. The hard boundary is routing depth, calendar integrations, crm workflows, and dependable scheduling, plus calendar integrations and reliability.
ENOriginal research content in English. Original prompt preserved in English.
Build a personal replacement for OnceHub in an empty repository.
Use Next.js 15, TypeScript, PostgreSQL, Drizzle ORM, Google Calendar OAuth, and Resend; do not offer alternative stacks.
The core loop is: read one calendar, publish booking pages with availability, routing rules, and forms, create conflict-safe bookings, and send confirmations and reminders.
Make the first run work locally with one documented command.
Store all user data locally by default and make export straightforward.
Put secrets in .env, ship .env.example, and never commit credentials.
Implement one account with configurable working hours, buffers, minimum notice, and booking horizon.
Connect Google Calendar using OAuth and store refresh tokens encrypted at rest.
Calculate availability in UTC and render it in the visitor's detected timezone.
Reserve slots transactionally, create calendar events, and prevent concurrent double booking.
Send confirmation, cancellation, and reminder email with signed management links.
Add an admin booking list, event-type editor, audit log, and calendar reconnect flow.
Include clear empty, loading, success, and recoverable error states.
Add input validation, safe filenames, and graceful handling of unavailable APIs.
Write focused tests for the core transformation and one end-to-end happy path.
Create a README with setup, architecture, permissions, data location, and backup steps.
Do not add accounts, billing, telemetry, analytics, or a hosted control plane.
Deliberately leave out Microsoft and Apple calendar support.
Deliberately leave out team round-robin routing.
Deliberately leave out payments, CRM workflows, and enterprise controls.
Finish by running the tests and listing the exact commands used.The prompt opens pre-filled in your agent. Review it before running. · this prompt is generated from the build plan · improve it via PR
What would building your own look like?
Read one calendar, publish booking pages with availability, routing rules, and forms, create conflict-safe bookings, and send confirmations and reminders.
What you will need
- Google Calendar OAuth credentials
- PostgreSQL
- public deploy target
- Resend API key
- domain with HTTPS
People still pay for OnceHub because people pay because one double booking or missed invite can cost more than years of subscription fees. The recurring cost buys OAuth refresh, webhooks, timezone databases, race conditions, reminders, deliverability, privacy, and uptime, not just the visible interface.
xrouting depth, calendar integrations, CRM workflows, and dependable scheduling
xmultiple calendar providers
xteam routing and round-robin
xpayments
xtimezone edge-case maturity
How much does OnceHub cost?
- Monthly billing
- $12/mo$12/mo · per person
- Per year
- $144/yr$144/yr
- Annual billing
- $120/yr17% cheaper than paying monthly
- On a Brazilian card, with 3.5% IOF
- R$62.71/moR$627/yr
Saved to My list. You will see a notice on this site when the price changes.
You complete the purchase on OnceHub’s site. Vibe Radar does not handle payments.
| Plan | Monthly | Annual (per month) | What is included |
|---|---|---|---|
| basic | $0/user | $0/user | 1 user; 1 calendar; 1 booking link; 6 weeks of analytics/activity history. |
| schedule | $12/user≈ $12 | $10/user≈ $10 | Unlimited booking links, calendars, and meetings; 1 phone number. |
| route | $23/user≈ $23 | $19/user≈ $19 | Unlimited routing forms and responses; 2 phone numbers. |
| engage | $47/user≈ $47 | $39/user≈ $39 | Unlimited chatbots and conversations; 3 phone numbers. |
| enterprise | custom | - | Designed for 30+ users; Security & Compliance add-on included. |
Free tier1 user; 1 calendar; 1 booking link; 6 weeks of analytics/activity history.
Billing termsmonthly + annual (about -17%); Enterprise custom
Additional costsSecurity & Compliance costs $6/user/month monthly or $5/user/month annually outside Enterprise; extra phone numbers cost $4/month; SMS uses separately purchased credits.
verified 2026-10-20 · source ↗
Is it cheaper to build or buy OnceHub?
Adjust the numbers: hours to build, your hourly rate, running costs and the subscription price.
Over 24 months, subscribing is cheaper.
Starting hours estimated from the analysis (multi-day). Does not price what you give up (support, integrations, security).
Can I rebuild OnceHub?
Kinda. The core of OnceHub is buildable in a weekend with the prompt on this page, but there are real gaps: routing depth, calendar integrations, CRM workflows, and dependable scheduling, multiple calendar providers. Read the honest list above before committing.
How much does OnceHub cost?
OnceHub costs about $12/mo (Schedule, checked 10/20/2026), which is $120 per year.
What do I lose by replacing OnceHub?
Honestly: routing depth, calendar integrations, CRM workflows, and dependable scheduling; multiple calendar providers; team routing and round-robin; payments; timezone edge-case maturity. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to OnceHub?
Yes: Cal.com (Mature open-source scheduling platform with calendar integrations and booking workflows.). Using prior art is also vibecoding; the prompt is for when you want it exactly your way.